Choose the Most Appropriate Letter for Each

Choose the most appropriate letter for each.
-p + q

A) a reference point that implies stability of gene frequencies through generations
B) encompasses all of those actually or potentially interbreeding populations that are reproductively isolated from other such groups
C) the genes of an entire population
D) the frequency of homozygous dominants in a population
E) the frequencies of dominant and recessive alleles in a population
F) the frequency of heterozygotes in a population
G) the frequency of homozygous recessives in a population
H) heterozygote advantage in regions where malaria is found
I) pesticide-resistant pests